I just got my 5.1 surround sound situated around my computer chair (before it wasn't it was all in the front). After getting my winamp and windows to give me full surround sound I opened MPC to watch some shows after my work and realized it doesnt utilize more than the front two.

I went to settings and changed the setting to 5.1 LFE setting and it doesnt really do anything for me It still only does stereo.
Does anybody have a guide or a FAQ or instructions as to how to get speaker fill or MPC to use ALL of my speakers?